Method for preparing humic acid synergistic carrier for ammonium phosphate suitable for alkaline soil

A technology of humic acid and carrier, applied in application, organic fertilizer, fertilizer mixture, etc., can solve the problem of patent application of humic acid synergistic carrier for ammonium phosphate, etc.

Inactive Publication Date: 2019-02-22
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Method for preparing humic acid synergistic carrier for ammonium phosphate suitable for alkaline soil
  • Method for preparing humic acid synergistic carrier for ammonium phosphate suitable for alkaline soil
  • Method for preparing humic acid synergistic carrier for ammonium phosphate suitable for alkaline soil

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Embodiment 1

[0080] Embodiment 1: Suitable for the preparation of humic acid synergistic carrier for ammonium phosphate in alkaline soil

[0081] The implementation steps of this embodiment are as follows:

[0082] A, humic acid organic extractant preparation

[0083] Add 30 parts by weight of monoethanolamine, 8 parts by weight of potassium citrate, 8 parts by weight of potassium salicylate and 8 parts by weight of ethylene glycol to 2000 parts by weight of water at a temperature of 60°C, stir and dissolve at a speed of 60 rpm to obtain The solution is cooled to a temperature below 40°C to obtain the humic acid organic extractant;

[0084] B, preparation of humic acid extract

[0085] Add 100 parts by weight of the weathered coal humic acid mineral raw material with a particle size of 150 meshes to 1250 parts by weight of the humic acid organic extractant obtained in step A, then gradually raise its temperature to 90° C. under stirring at 100 rpm, and Keep at this temperature for 40 mi...

Embodiment 2

[0088] Embodiment 2: Suitable for the preparation of humic acid synergistic carrier for ammonium phosphate in alkaline soil

[0089] The implementation steps of this embodiment are as follows:

[0090] A, humic acid organic extractant preparation

[0091]Add 20 parts by weight of diethanolamine, 5 parts by weight of potassium citrate, 5 parts by weight of potassium salicylate and 5 parts by weight of ethylene glycol to 1400 parts by weight of water at a temperature of 64°C, stir and dissolve at a speed of 120 rpm to obtain The solution is cooled to a temperature below 40°C to obtain the humic acid organic extractant;

[0092] B, preparation of humic acid extract

[0093] 100 parts by weight of the lignite humic acid mineral raw material with a particle size of 200 were added to 800 parts by weight of the humic acid organic extractant obtained in step A, and then its temperature was gradually raised to 90° C. under stirring at 130 rpm, and at this Maintain the temperature fo...

Embodiment 3

[0096] Embodiment 3: suitable for the preparation of humic acid synergistic carrier for ammonium phosphate in alkaline soil

[0097] The implementation steps of this embodiment are as follows:

[0098] A, humic acid organic extractant preparation

[0099] Add 40 parts by weight of triethanolamine, 10 parts by weight of potassium citrate, 10 parts by weight of potassium salicylate and 10 parts by weight of ethylene glycol to 1000 parts by weight of water at a temperature of 67°C, stir and dissolve at a speed of 180 rpm to obtain The solution is cooled to a temperature below 40°C to obtain the humic acid organic extractant;

[0100] B, preparation of humic acid extract

[0101] 100 parts by weight of the lignite humic acid mineral raw material with a particle size of 250 meshes is added to 1500 parts by weight of the humic acid organic extractant obtained in step A, and then its temperature is gradually raised to 90° C. under stirring at 180 rpm, and at this Maintain the temp...

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Abstract

The invention relates to a method for preparing a humic acid synergistic carrier for ammonium phosphate suitable for alkaline soil. The preparation method comprises the steps of preparing an organic extracting agent of humic acid, preparing a humic acid extract and preparing a humic acid synergistic carrier. After the humic acid synergistic carrier is combined with urea, the fixation of the ammonium phosphate in the alkaline soil can be remarkably retarded by affecting the fertilizer pH, the availability of phosphorus is improved, and an available phosphorus pool of the soil can further be supplemented. The soil pH within 1 cm in fertilizer is reduced by 0.3-1.4 units compared with commercially available ammonium phosphate, and the soil Ca2-P and Ca8-P are increased by 22% and 16%, respectively, compared with the commercially available ammonium phosphate. The wheat root weight and vigor increase by 35% or more. Compared with the commercially available ammonium phosphate, the humic acidammonium phosphate improves the yield of the wheat by 12.6% on average, and improves the utilization rate of phosphate fertilizer by 9.34%.

Description

【Technical field】 [0001] The invention relates to the technical field of fertilizer production. More specifically, the invention relates to a method for preparing a humic acid synergistic carrier for ammonium phosphate suitable for alkaline soil. 【Background technique】 [0002] my country's phosphorus resource reserves only account for 5.5% of the world's total reserves, and the per capita resource amount is only 39% of the world's average level. Ammonium phosphate is the most important phosphate fertilizer in my country, but because it is easily fixed by calcium, magnesium, iron, aluminum and other metal ions after entering the soil, the utilization rate in the current season is only about 20%, causing huge economic losses and waste of resources. Only when the soil pH is 6-7, the available phosphorus concentration is the highest. The content of calcium and magnesium ions in alkaline soil is high. After phosphorus enters the soil, more than 80% of it will be fixed within 3...

Claims

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Application Information

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IPC IPC(8): C05F11/02C05G3/04C05G3/80
CPCC05F11/02C05G3/80
Inventor 袁亮赵秉强林治安张水勤李燕婷王薇
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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